Alhambra / Monterey Park / Rosemead in LA are hotspots of lots of different types of Asian foods. It always was, since the time of the Vietnamese arrivals in California, but it has grown to absorb every wave of new arrivals and their delicious foods.
When my Vietnamese Chinese neighbor in SF found out I was going to LA, she was like can you pls buy the cured sausages from my favorite sausage maker from Saigon? I found it in Rosemead. It was the same family, same recipe. She was so happy to try it again after decades.